PDF malware analysis — malicious · bb4c93f9c6d3eb1e

MALICIOUS

PDF

14.5 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 45a855f29c47d5964966a8c9fc34e7d6 SHA-1: 0c40adec5e99fceb0b1ac8e6956155431b62235f SHA-256: bb4c93f9c6d3eb1eeb4449d44c6ac7a79a37afbe08448b67ef16720cbe293458

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The critical ClamAV detection of 'Pdf.Exploit.Agent-36118' strongly suggests a known exploit. The JavaScript uses eval() to deobfuscate and execute code, which is a common technique for downloading and running further malicious content. The reconstructed string 'eval(tts'+vttv+'dff[jio'+vttv+'ol])' points to the execution of obfuscated JavaScript, likely a downloader.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `92ae3faca367bb13394f082668e34068a8706d6a34064e75c10bb6d498f25930`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13326 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 19 long base64-like blob(s).

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